Re: [alsa-devel] Verifying mixer dB data/Invalid dB data from USB cards, especially Aureon 5.1 MkII

On Wed, 17.02.10 12:06, Mark Brown (broonie@opensource.wolfsonmicro.com) wrote:

I'd actually be surprised if there were too much of an issue with this beyond the data collection one (especially for USB devices).

I wonder if we could harvest this in some way from the Windows drivers? Does Windows care about the dB data at all? Maybe one could extract this information from their .inf files or so, if they store it there?

At least the Vista APIs seem to expose dB data:

http://msdn.microsoft.com/en-us/library/dd371447%28VS.85%29.aspx

I wonder where they get that data from and what they do with broken hardware like the Aureon... Now I wished I had access to a Windows machine to figure that out...

Lennart